Alert archive / Kentucky / Tornado Watches in 2015
Tornado Watch 23
The Storm Prediction Center issued this tornado watch at Apr 3, 2015, 3:10 PM CDT for 59 counties in Kentucky; 43 counties in Tennessee; Lee County, Virginia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2015, 3:10 PM CDT (20:10 UTC)
- Expired
- Apr 3, 2015, 9:12 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 65 kt
All 103 counties
Adair County, KY, Anderson County, KY, Bath County, KY, Bell County, KY, Bourbon County, KY, Boyle County, KY, Breathitt County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Green County, KY, Harlan County, KY, Harrison County, KY, Jackson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Taylor County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Anderson County, TN, Bedford County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Claiborne County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Grainger County, TN, Grundy County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hawkins County, TN, Jackson County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, Marshall County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Smith County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Lee County, VA
The radar
The Jackson,KY radar (KJKL), 105 km from the middle of the area, began a volume at 20:11 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 60%
- One or more EF2 to EF5 tornadoes
- 50%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 3:39 PM CDT | Flash Flood Warning | JKL | Bath, Elliott, Fleming, Montgomery, Rowan | 7 hr |
| Apr 3, 4:22 PM CDT | Severe Thunderstorm Warning | JKL | Bath, Menifee, Montgomery, Morgan, Rowan | 23 min |
| Apr 3, 4:41 PM CDT | Flash Flood Warning | JKL | Bath, Elliott, Johnson, Menifee, Montgomery, Morgan and 1 more | 4 hr |
| Apr 3, 5:27 PM CDT | Severe Thunderstorm Warning | JKL | Elliott, Johnson, Martin, Morgan | 33 min |
| Apr 3, 5:29 PM CDT | Severe Thunderstorm Warning | OHX | DeKalb, Smith, Wilson | 31 min |
| Apr 3, 5:40 PM CDT | Severe Thunderstorm Warning | OHX | Cannon, DeKalb, Rutherford, Wilson | 35 min |
| Apr 3, 5:43 PM CDT | Flash Flood Warning | JKL | Martin | 3 hr |
| Apr 3, 5:58 PM CDT | Severe Thunderstorm Warning | OHX | Jackson, Putnam, Smith, White | 47 min |
| Apr 3, 6:02 PM CDT | Severe Thunderstorm Warning | OHX | Cannon, DeKalb, Van Buren, Warren, White | 43 min |
| Apr 3, 6:04 PM CDT | Severe Thunderstorm Warning | OHX | Cumberland | 26 min |
| Apr 3, 6:07 PM CDT | Severe Thunderstorm Warning | MRX | Loudon, Morgan, Roane | 53 min |
| Apr 3, 6:14 PM CDT | Severe Thunderstorm Warning | OHX | Cannon, Coffee, Rutherford, Warren | 46 min |
| Apr 3, 6:35 PM CDT | Flash Flood Warning | JKL | Estill, Lee, Menifee, Powell, Wolfe | 3 hr |
| Apr 3, 6:35 PM CDT | Severe Thunderstorm Warning | MRX | Grainger, Greene, Hamblen, Hancock, Hawkins, Sullivan and 1 more | 40 min |
| Apr 3, 6:41 PM CDT | Severe Thunderstorm Warning | OHX | Coffee, Grundy, Van Buren, Warren | 49 min |
| Apr 3, 6:51 PM CDT | Severe Thunderstorm Warning | OHX | Cumberland, White | 39 min |
| Apr 3, 6:54 PM CDT | Severe Thunderstorm Warning | MRX | Anderson, Knox, Loudon, Morgan, Roane | 51 min |
| Apr 3, 7:12 PM CDT | Severe Thunderstorm Warning | MRX | Bledsoe, Hamilton, Meigs, Rhea, Roane | 48 min |
| Apr 3, 7:27 PM CDT | Severe Thunderstorm Warning | MRX | Marion, Sequatchie | 48 min |
| Apr 3, 7:29 PM CDT | Severe Thunderstorm Warning | OHX | Grundy, Van Buren, Warren | 22 min |
| Apr 3, 7:46 PM CDT | Severe Thunderstorm Warning | MRX | Blount, Loudon, McMinn, Monroe | 44 min |
| Apr 3, 7:58 PM CDT | Severe Thunderstorm Warning | MRX | Bradley, Hamilton, McMinn, Meigs, Monroe, Polk | 62 min |
| Apr 3, 8:13 PM CDT | Severe Thunderstorm Warning | MRX | Marion, Sequatchie | 47 min |
| Apr 3, 8:45 PM CDT | Flash Flood Warning | JKL | Elliott | 4 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 8.2 hours before the alert went out and 233 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 135 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 990 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 274 m²/s²
- 0-3 km storm-relative helicity
- 325 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
266
WWUS20 KWNS 032017
SEL3
SPC WW 032017
KYZ000-TNZ000-VAZ000-040400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 23
NWS STORM PREDICTION CENTER NORMAN OK
410 PM EDT FRI APR 3 2015
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
CENTRAL AND EASTERN KENTUCKY
MIDDLE AND EASTERN TENNESSEE
FAR SOUTHWEST VIRGINIA
* EFFECTIVE THIS FRIDAY AFTERNOON FROM 410 PM UNTIL MIDNIGHT EDT.
* PRIMARY THREATS INCLUDE...
A FEW TORNADOES LIKELY WITH A COUPLE INTENSE TORNADOES POSSIBLE
SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS
TO 75 MPH POSSIBLE
SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST OF
HUNTINGTON WEST VIRGINIA TO 45 MILES SOUTHWEST OF CROSSVILLE
TENNESSEE. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 22...
DISCUSSION...TSTMS EXPECTED TO INCREASE IN COVERAGE/STRENGTH ACROSS
WW THROUGH THIS EVE IN RESPONSE TO CONTINUED SFC HEATING...THE
GRAZING INFLUENCE OF MID-MS VLY SHORTWAVE TROUGH...AND THE APPROACH
OF WRN KY-TN COLD FRONT. WIND FIELD WILL REMAIN FAVORABLE FOR
SUSTAINED UPDRAFTS/SUPERCELLS THROUGHOUT WW. HOWEVER...PRESENCE OF
EXISTING LEFT-SPLIT STORMS AND OTHER CONVECTION/CLOUDS WILL KEEP
LOW-LVL UPLIFT FIELD AND...POTENTIALLY...THE SVR THREATS MORE
FRAGMENTED IN KY RELATIVE TO TN. THE GREATEST SVR
POTENTIAL..INCLUDING THE RISK FOR A STRONG TORNADO OR TWO...MAY
EVOLVE ALONG W-E OUTFLOW BOUNDARY STALLED OVER NRN TN.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 27040.
...CORFIDISPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 7:32 PM CDT | Mesoscale Discussion | SPC | Boone, Breckinridge, Bullitt, Butler, Caldwell, Carroll and 27 more | 58 min |
| Apr 2, 10:41 PM CDT | Severe Thunderstorm Watch | SPC | Ballard, Carlisle, McCracken | 6 hr |
| Apr 3, 3:39 AM CDT | Mesoscale Discussion | SPC | Ballard, Carlisle, Livingston, McCracken | 66 min |
| Apr 3, 11:56 AM CDT | Mesoscale Discussion | SPC | Adair, Allen, Ballard, Barren, Boyle, Breckinridge and 48 more | 94 min |
| Apr 3, 12:14 PM CDT | Tornado Watch | SPC | Allen, Ballard, Barren, Breckinridge, Bullitt, Butler and 39 more | 8 hr |
| Apr 3, 2:23 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 96 more | 97 min |
| Apr 3, 5:10 PM CDT | Mesoscale Discussion | SPC | Boyd, Greenup | 95 min |
| Apr 3, 5:43 AM CDT | Mesoscale Discussion | SPC | Lake | 2 hr |
| Apr 3, 3:57 PM CDT | Mesoscale Discussion | SPC | Chester, Fayette, Giles, Hardeman, Hardin, Lawrence and 4 more | 93 min |
| Apr 3, 5:54 PM CDT | Mesoscale Discussion | SPC | Cannon, Cumberland, DeKalb, Fentress, Jackson, Morgan and 9 more | 66 min |
| Apr 3, 6:48 PM CDT | Severe Thunderstorm Watch | SPC | Franklin, Lincoln, Moore | 4 hr |
Nearby
Tornado Watches in Kentucky, 2015Tornado Watches in Tennessee, 2015Tornado Watches in Virginia, 2015Every tornado watch in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.